Ces radiol. 2007, 61(1):97-104

Imaging of coronary artery bypass grafts with multidetector-row CT-angiography: retrospective study of 250 examinationsOriginal article

Jan Baxa1, Jiří Ferda1, Jan Pešek2, Kristýna Ohlídalová1, Hynek Mírka1, Richard Rokyta2, Tomáš Hájek3
1 Radiodiagnostická klinika LF UK a FN, Plzeň
2 I. interní klinika LF UK a FN, Plzeň
3 Kardiochirurgické oddělení LF UK a FN, Plzeň

Aim: The aim of this retrospective study was to evaluate capabilities of cardiac CT in patients with CABG (coronary artery bypass graft) and compare the accuracy of 16- (16DCT) and 64- (64DCT) detector-row CT in detecting significant stenosis of CABG.

Method: A total of 250 patients with 774 bypasses underwent CT-angiography with ECG synchronization (152 patients on 16DCT, 98 patients on 64DCT). We evaluated patency and presence of significant stenosis (> 50 %) and subsequently compared results of CT and invasive coronary angiography (ICA).

Results: Altogether 583 bypasses were patent and 191 were occluded, 57 bypasses showed a stenosis greater than 50 %. In 181 patent CABG assessed by both methods (MDCT and ICA), the results were compared. Sensitivity and specificity of 64DCT (90,4 % and 98,1 %) was higher than of 16DCT (84,6 % and 95,8 %).

Conclusion: CT-angiography is feasible method for examination patients with CABG. 64DCT shows higher accuracy than 16DCT in detection of significant stenosis.

Keywords: coronary artery bypass graft - CABG, CT-angiography, cardiac CT, ECG synchronization
Grants and funding:

Práce byla podpořena výzkumným projektem MSM 0021620819.

Accepted: November 16, 2006; Published: March 1, 2007  Show citation

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Baxa J, Ferda J, Pešek J, Ohlídalová K, Mírka H, Rokyta R, Hájek T. Imaging of coronary artery bypass grafts with multidetector-row CT-angiography: retrospective study of 250 examinations. Ces radiol. 2007;61(1):97-104.
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